Another important one (for covered bridges, for example) the Town truss or lattice truss. Image:Town truss2.jpg... taken from the original patent, not as good.

And another example, for the Pratt truss: Image:Pratt truss.PNG... this drawing is yet a third style of diagram, much simpler than the first. It's servicable but not as attractive as the King post.

For more examples see Truss bridge ... there are a lot of truss types and the illustrations vary.

Significance: Trusses are a basic thing to document in an encyclopedia. Our coverage is spotty and stylistically inconsistent. This is a pretty easy project (one or two days work ought to do it once the style was chosen) compared to the above animation of a complex biological system so it might be a good one to test out process and so forth. Or, it might be one that is not a good fit, so discussing why or why not might help define this overall project even if we reject this particular one.

Doing a set of these may be a good one to use for newcomers as they are relatively simple to construct.

However the topic would be relatively lower on the 'importance' scale as they are specific to bridge construction only, and even then are only one type of bridge. (Comparing the interwiki links, Truss bridges has 3, whereas Action potential has 19.)

Another consideration is, could this topic be equally or even better illustrated by an actual photograph? That seems quite likely to me. (Although virtually everything benefits from an idealised illustration, some things can't really be photographed adequately)

Yep, very (but as the coord, I ask you is the suggestion helpful in the first place to drive thinking?). I floated this as a trial but I'd point out that I'm not convinced the articles are organized correctly in this area. Trusses have structural significance beyond just bridges (although most non bridge trusses, like floor trusses or stadium roof trusses, etc, tend to be simple) and the articles are a bit of a jumble. So the 3 interwikis may be due to underrecognition. I also agree that this is very easy and maybe someone could be persuaded to bang them out without needing to get a token monetary reward. I'm not sure pictures illustrate trusses as well as diagrams (as with many mechanical things, stripping away detail often clarifies what is important. Consider Image:TripleExpansionMed.jpg (a picture) vs. Image:Christopher_Columbus_whaleback_ccengine_crop.jpg (an engraving) vs. Image:Triple_expansion_engine_animation.gif (animated cutaway diagram) ... (all taken from w:Steam engine. That is an extreme example of course but it shows how much more clarity a diagram can bring. Also consider the single cylinder diagram with annotations a bit above it. But ya. The biology one above is much more important in the grand scheme of things. ++Lar: t/c 17:11, 14 November 2007 (UTC)

Yes, it was a helpful suggestion. :) pfctdayelise 13:40, 17 November 2007 (UTC)

Which specific subjects or topics? It would be good for this wikiproject to figure out a priority list: which images should be the most important, the most necessary, the most needed? pfctdayelise 13:30, 17 November 2007 (UTC)

A comparable existing resource are e.g. the icons in Gogle Earth. They work with colors and transperancy. But they are also very commercial oriented (hotels, bars, shops, etc.). At http://openclipart.org I found nothing. I would prefer something in KDE-style.

The problem with the simplicity of one icon can be solved if an whole icon set would be estimated. I believe it's not so easy to make a simple small icon which is understandable in the whole world.

A list with necessary icons for the Wikipedia-World-Project can found at the end of info.php, there are train stations, churchs, castles, manor-houses,mountains, volcanos, monuments, companies, cemetery, zoo, caves and many more. --Kolossos 12:57, 25 November 2007 (UTC)

I do not think that this problem can only solved spending Mr Greenspun's money --134.130.68.65 23:12, 14 December 2007 (UTC)

We have a few great SVG diagrams of musical instruments, but there are many other instruments that could use one. Currently, we have a drum kit, a very nice trombone, a few relating to trumpets and a whole bunch about pianos (found here). Besides those, I haven't found anything worth using. We're surprisingly lacking in this area. I would love to see any new instrument diagrams, but specifically these are what I have in mind:

Commonly, w:evolution and w:phylogenetics are illustrated by a nice "tree of life"-illustration: E.g. [1] (it is not very pretty, but you'll get the general idea), with pictures of representative animals representing the different groups. Such an illustration would look good at the top of e.g. the evolution page compared to the primitive picture we have currently. en:User:Kjaergaard

Creation: A library of hydraulic symbols. It would need to have at least 20-30 different basic symbols, in SVG format, done in such a way that they could easily be combined together (same size, with common elements in the same place etc; a number of symbols exists in a number of small variations and it would be senseless to have them all).

Hydraulic symbols are (obviously) very important in hydraulics, and each article on a hydraulic component should include information about its symbol(s). However, currently, the only hydraulic symbol I know of on any Wikimedia project is Image:Hydraulic accumulator (symbol).svg (there are also a few hydraulic circuits, like Image:Hydraulic circuits 300px.png). A library of hydraulic symbols would also make it easy to draw hydraulic circuits when they are needed, and make them more uniform. Outside of Wikimedia projects, such a library could find use in circuit drawing programs.

Quite a good idea, since they appear to be relatively simple the request could be for such a "set" of symbols that could then easily be mixed and matched to make whatever diagram was needed. pfctdayelise 13:12, 5 December 2007 (UTC)

We have to clear if the symbols in the PDF are eligible for copyright (in Germany they are definitively not copyrighted). As Lupo at en or Commons --Histo 23:27, 14 December 2007 (UTC)

Creation of diagrams of main vehicle types, then of more precise vehicle types.

The two example above illustrate what I mean : we need diagrams to explain the main parts of the vehicles. My main interest lies in ships, so I would imagine diagrams of main ship types : cargo ship, warship, fishing boat. Then of more precise types : container carrier, icebreaker, etc. A possible quality reference is Klaas van Dokkum, Ship knowledge : a modern encyclopedia, DOKMAR, Enkhuizen, Netherlands, 2005 (ISBN 9080633062), which has this kind of well-drawn diagrams. Not free though :-)

Ideally diagrams should have natural colours, should be reviewed by people who know the differents vehicle types, and possibly should allow a small view inside the vehicle (if appropriate) to see key features (eg layout of seats in an airplane, engine and cargo in a ship, etc.)

Wow, thanks for giving all those examples; sounds like you know your ships. I agree we're lacking in this area. Maybe it would be better if we did diagrams of major components the many ships share? And maybe a comparison chart? I'm reminded of first learning about the types of ships playing Battleship as a kid. :) I think I remember seeing an engine animation somewhere... Rocket000 07:30, 13 December 2007 (UTC)

Yes, drawing parts of them would be useful too. We can think at an engine room floor, a compass bridge arrangement, the steering mechanism, cranes and cargo handling equipment, the sensors (sonar, radar, etc.) and weapons (self-defense & offensive) on naval ships, etc. But overall diagrams are indeed very useful in order to explain the basics of shipping in articles. I find myself missing a good diagram of a cargo ship in order to develop the corresponding article. So I have to write three-four paragraphs just to say waht one picture would describe elegantly. One of the only diagrams we have are Image:Lod Schema.png (which is very poor : completely inaccurate, not corresponding to an actual ship type, arrows are misplaced... all wrong) and Image:Tugboat diagram-en.svg (nice but depicts an outdated tugboat and has been drawn by someone who doesn't know much about tugs, so it mixes straightforward labels with more complex ones). le Korrigan→bla 10:11, 13 December 2007 (UTC) (and I also learnt ship types by playing battleship :-))

Well, I miss most non-water-based vehicles, really ! For land-based vehicles, the list can be quite long as well, from kick scooters to tanks, including rubbish collection trucks or ambulances :-) le Korrigan→bla 00:41, 14 December 2007 (UTC)

Adaption: The images for head-tilt chin-lift needs to be redone showing the force exerted on the head and chin (ie. direction to tilt and lift), also showing the final position with the jawline perpendicular to the ground. This could be an animation, or two images. Also a diagram of the oral airway inserted properly - an animation showing the rotation during insertion would be excellent, but could also be several images. An animation for insertion of the oral airway would be ideal since it's extremely difficult to learn without hands-on training, and very difficult to explain in text. A simple animation of say 5 frames could do the job nicely.

Creation: Echoing the above request: a diagram showing an asthma attack, stroke/TIA, and a graph of the relative concentrations of blood gasses during hyperventilation as a function of time and breathing rate.

Importance:The head-tilt chin-lift is probably the most crucial technique in first aid, but is a tad difficult to explain in such a way that candidates do it properly. A clear diagram or animation should help readers understand the technique and why it's so important to do it right.

The other images are needed to properly illustrate concepts that are lengthy when put into words; a well-done diagram in these cases could replace entire sections of text. They're difficult concepts to grasp, being among the more advanced in the book. These would obviously be useful on other projects, specifically Wikipedia. Multiple languages would be ideal, but I'm only requesting English text for now; translations would be easy to do later.

"Double crochet" and "treble crochet" have entirely different meanings in the U.S. and U.K., but crochet schematics are international.

This would be a boon to the underdeveloped textile arts area. For example, a standard international schematic notation exists for crochet but the terminology is inconsistent. Photographs are often unclear so good schematics are essential to any technical discussion of the subject. An article on one traditional motif recently got highlighted at the English Wikipedia's main page as a "Did you know" spotlight.[3] I'd be glad to bring someone with the proper graphics skills up to speed if they're willing to help, and I'll even offer a reward: help out and I'll make some crochet for you. Cheers, Durova 20:05, 13 December 2007 (UTC)

Which specific topic or concept do you want to request for? pfctdayelise 11:23, 14 December 2007 (UTC)

Crochet notation would be a great place to start. I want to create a list for the basic stitches and motifs. International symbols would be a great adjunct to the swatches I'm creating. Durova 04:59, 19 December 2007 (UTC)

Would it be possible to get a better diagram created of the structures of euglenas? The two existing diagrams (above) leave much to be desired. Euglenas are important organisms for understanding the evolution of the eye. Copyrighted diagrams for reference: [4][5][6][7]Kaldari 21:36, 14 December 2007 (UTC)

I added the third one. It's not great, but it's better than the other two. Rocket000 17:25, 15 December 2007 (UTC)

Thanks, I didn't know about that one. If it had thicker lines and some labels, it wouldn't be half bad. Kaldari 15:58, 17 December 2007 (UTC)

It's an SVG, presumably thickening the lines would not be too hard? I wasn't able to tell what things corresponded to what though. That might be a challenge to whoever were to try to add label lines/numbers. BTW what was wrong with the second one other than it being monochromatic? Knowing what is bad about these would help drive improvement. ++Lar: t/c 16:37, 20 December 2007 (UTC)

The second illustration would be fine if Euglena was a character in South Park. And I think the first one is from the Simpsons actually. Kaldari 01:58, 30 December 2007 (UTC)

lol. That's a good way to put it. :-) Rocket000 19:02, 2 January 2008 (UTC)

AFAIK, this project is not for maps. Sad but with such as small budget, you have to be restrictive anyway. For the Red Sea, User:Sting is working on it so the result should be nothing less than amazing :-) le Korrigan→bla 10:25, 15 December 2007 (UTC)

The significance is self-evident; the articles are typical Wikipedia articles on notable topics, and need illustrations. The main w:Cue sports article links to most of the more specific (non-bio) articles under the topic's rubric; see also w:Category:Cue sports. Many bio articles in this topic are also imageless for the obvious reason that it's hard to obtain photos of notable, modern people that are not subject to copyright; see w:Category:Cue sports players for the main category, though there is also w:Category:Cue sports non-player personalities which has a few referees, announcers, etc.

Basic explanation or illustration of how this example products work; Computer parts (cpu, motherboard, memory), air conditioners, car components (transmission, etc.) various city electrical grid components, various consuction techniques for buildings, the phone network, all the variety of machine that convert/amplify/concentrate energy, how basic cosmic object operate such as stars or events like supernovas, how stainless steel and other important products are made, explanation of the operation of any factory/plant (example: sewer treatment), how various materials get reinforced or how extra strong material are constructed and so forth.

Just some brainstorming if you guys are looking for ideas. Thank you and hope the above was useful. 76.10.142.66 16:08, 20 December 2007 (UTC)

In general, chemical process can be illustrated with simple chemical structures and arrows (as seen in w:Glycolysis), however, maybe a simpler and less chemistry-oriented diagram could be made (if possible). I'm just not sure what more there is to illustrate other than chemical structures and their transformations. I would like some on cellular respiration in general, though (anaerobic respiration in this case). Rocket000 03:10, 9 January 2008 (UTC)

There's already a lot of zoological illustrations, but, of course, we could use more. Did you have any specific animal(s) in mind? We need more than just a section heading for a request. Please be more specific. Thanks. Rocket000 02:01, 9 January 2008 (UTC) P.S. It looks like I created this section, I did not. Just responding to a section header.. Rocket000 02:54, 9 January 2008 (UTC)

I would like to propose a diagram illustration in honor of Kwantus (Hume Smith), who passed away. Kwantus created the article about the Single bullet theory on the English Wikipedia. This article, more than any other I can think of, is crying out for a diagram. Here's an example from an outside website. Kaldari 20:25, 7 January 2008 (UTC)

The French WP article on this uses a few illustrations, though they don't look so great. A new illustration would really top of that Featured Article, but only 3 WPs have a page on the subject (according to the interwiki links). IMO, it's notable enough for all of them to eventually have it, but I don't know if there's enough demand for this right now. There's a ton of really basic topics that need illustrations making this somewhat of a lower priority, but who knows? :) Rocket000 01:19, 9 January 2008 (UTC)

I've added a digram to the page. Nothing fancy but does the job. Any comments or improvement and un-welcome but will be listened to.

A such graphic project need to create about 200 - 400 images, by one skilled graphist, expressing simply (quickly draw in comic/manga style) the most used words (objects, actions, animals, ...). And this will probably need more than 40 or 80 US$ (1? 2? 4US$ / image ?).

I support more Kasuga because his characters are clearly link to Wikimedia and free knowledge share, the manga style (schematic draw) being especialy welcome for this use, but do he work in SVG ? For LadyofHats, I never seen him draw manga characters, but he have amazing skills, and already fully work in SVG format. For Niabot, I don't no if he can talk english, and he just made one amazing SVG-manga.

how to process

The graphist should first show us 5 images, with the english word on the bottom. If the result is great, he get the task. Images should be :

Format : SVG is strongly encouraged, of course (but PNG may be vertorized by volunteers later);

Basic : drawing should be basic( avoid to have to many details = parasites). Images of such on this page are really fine, doesn't need more.

Style : your set of image have to be in the same graphic style (I encourage the Manga style) ;

Supporting this request, I would also add that images don't need to be only for illustrating the meaning of a word, but they can be also very useful if they illustrate a language learning task, for example, a picture with an attractive city map for a learning task about orientation on the streets. Other pictures which can be very useful for vocabulary or writing learning are drawings with lots of small details. The details should be connected in some way, to make a tematic unity. The images should always be interesting or funny, to make the learning experience more attractive. Sorry, they were just some suggestions. --Javier Carro 16:54, 18 January 2008 (UTC)

I'm not sure if they should always be funny. This might be off-putting for adult learners. Arthena 18:28, 18 January 2008 (UTC)

I agree with Javier Carro, for children and adults as well, images should be : funny and clear. After what I encourage to avoid too lots of small details, which are semantic parasites. Images of such on this page are really fine, doesn't need more. 210.203.61.15 18:12, 19 January 2008 (UTC)

Well, images with details aren't necessarily "semantic parasites", for example: an image of a person siting on a bench, beside a child playing with a dog, in front of a tree, having behind a lake; is very useful for practising prepositions. Language learning with pictures isn't limited to learn the names of basic objects. You are referring to basic level LL. Furthermore, visual diagrams are also very useful and efficient for vocabulary learning if the learner is interested on a particular field. --Javier Carro 09:54, 20 January 2008 (UTC)

yes, but thes images should not display 3 dogs, all differents, with 3 colors each, with differents eyes, 4 tree on the backgrounds, a beautiful sea, somes birds, and a road with 2 cars : this is useless. The image should display : a child(Subject) + behind (the word) + something (a basic context). No more. 210.203.61.15 12:33, 20 January 2008 (UTC)

We can now ask both LadyofHats and Kasuga to make 5 try with :

_ apple ; cat ; swimming ; behind of ; library ;

This encouraged to be in SVG, but If Kasuga make a great job in PNG, with easy colors effects, that's will be easely vectorizable. 210.203.61.15 08:54, 28 January 2008 (UTC)

pfctdayelise Need here

Hello pfctdayelise, can you propose a "price by image" ? I think that such basic images don't need 25US$ each, especially when the request is about one hundred to 6 hundred images, depending on what the graphist will be able to make. I encourage a rate about 4US$ each => 100 = 400US$. But, according to the fact that few graphist are attrackted by this Greenspun project, it may be need to up it.

What price can you confirm your are able to paid before to let Kasuga or LadyofHats involve themselves ?

Niabot says he is capable of the english language at an advanced level (EN-3). Have you contacted this person already? I for my part also uploaded some of my work on Commons, also doing vector works from time to time. --Yamavu 11:03, 13 May 2008 (UTC)

While we're at it, we could use a diagram of a master cylinder as well. Here aresomenicecommercialdiagrams. (Those are all dual/tandem master cylinders, BTW, which is the most common type found in automobiles.) Kaldari 19:41, 18 January 2008 (UTC)

The articles on Gamma-ray astronomy have no diagrams. How about a diagram of a gamma-ray telescope, perhaps similar to one ofthesefineillustrations? (Yes, I know the NASA one is freely usable, but unfortunately, it's also the crappiest of the examples.) Kaldari 23:17, 19 January 2008 (UTC)

Animation(s) of electron transitions for luminescence and phosphorescence[edit]

Creation : An educational animation, explaining what an electron transition is in a complex, how it works, why you need a photon to have a transition and why luminescence and phosphorescence occur (for the latter also forbidden transitions will have to be included). It could consist of a very long explaining animation, or maybe several shorter ones, all explaining one aspect.

Luminescence and Phosphorescence is a hard but important physics / chemical occurrence, and is hard to understand without additional illustrative material. It might be relevant for several wikibooks, including books about physics, chemistry and explanations about the fundamentals of quantum mechanics, but also very much on subjects in Wikipedia.

The Altman types have ramifications for diagnosis, prenatal and perinatal management, and surgical treatment of this kind of tumor. Also, an illustration is less scary and more informative than a photo or radiology image.

Purpose: Educational texts on architecture are filled with high-quality diagrams. Many Wikipedia pages use photographs to illustrate architectural elements. However, most photographs on these topics tend to obscure instead of illuminating concept.

Purpose: Sailing and yachting topics are best understood from diagrams. A picture of the process over time captures the movement of the boat and sail against the wind. Also, knots made with rope are easiest seen as a diagram.

Purpose: This earthquake scale is of interest in science education and used in stories from natural disasters. Frequently the Richter Scale index appears in mainstream news stories describing any earthquake which results in casualties. [8][9]

Surely a diagram relating to the absolute magnitude scale would be of more use, as it is of use for describing earthquakes of all magnitudes (not just <~6.8)? VerisimilusT 19:46, 11 February 2008 (UTC)

I would certainly support a diagram of the w:Moment magnitude scale or the Richter Scale. The current Wikipedia page for the moment magnitude scale is mostly a mathematical definition. It clearly could benefit from a diagram. DutchTreat 19:08, 17 February 2008 (UTC)

"Cystic fibrosis is one of the most common life-shortening, childhood-onset inherited diseases. In the United States, 1 in 3900 children are born with CF. One in twenty-two people of European descent carry one gene for CF, making it the most common genetic disease in these populations."

In the U.S., the incidence of AAA is 2-4% in the adult population. An abdominal aortic aneurysm occurs most commonly in older individuals (between 65 and 75), and more in men and smokers. The most important complication of an abdominal aortic aneurysm is rupture, which is most often a fatal event.

Creation: This featured article currently lacks a suitable leading image. An image depicting an Ediacaran community would greatly enhance the article and make it more accessible. The current image is horrendously out of date and at odds with the current interpretation of the biota.

I have only seen up-to-date images in the scientific literature; the most recent suitable paper is provided. E-mail me if you need me to send PDFs. Many further articles concern themselves with one specific organism, and I'm not aware of a recent depiction of the full ecosystem.

The Ediacara biota were the first organisms to attain large size and relative complexity. Appearing in the fossil record just before animal fossils became common in the Cambrian explosion, the organisms remain something of a mystery. They may belong to an extinct kingdom - a "failed experiment" in life - or be the predecessors of the animal groups we are familiar with today.

On the German Wikipedia we are looking right now into the possibilities to create a 3D model of the archaeological site w:Poverty Point in Louisiana, USA. As a state historic site, with archaeologists from several universities working there, most existing images and illustrations are unfree (unlike other sites that are administrated by the National Park Service where all works by federal employees are in the public domain). Possible uses of the model would be all kinds of looks into the site as it was some 3500 years ago - and ultimately the option to create an animated flight over the site and its spectacular location on a small bluff over the flood plane of the Mississippi River basin. See: de:Wikipedia:Grafikwerkstatt/Grafikwünsche#Poverty_Point and the already existing schematic map and the tentative draft. --h-stt!? 06:02, 15 April 2008 (UTC)

This looks really interesting. Unfortunately I don't read German. This looks like it might be a more complex than average request -- do you think that is true? Also, is there someone already interested on working on it? It would be great if someone could summarise the discussion...! thanks --pfctdayelise 15:13, 25 July 2008 (UTC)

en:Category:Wikipedia requested diagram images has hundreds of existing diagram requests. Some of those might be worthy for inclusion in this list, and some of the requests here might be added to the corresponding Wikipedia article with the {{reqdiagram}} tag. -- Beland 20:19, 20 May 2008 (UTC)

Wow, that's mega useful. How did I not think of that before??! Thanks so much. pfctdayelise 15:04, 25 July 2008 (UTC)

The illustrations associated with the spinal cord [10] enWikipedia article could use reworking. Specifically, the existing illustration of the anterolateral (ALS) system should be redone (the one labeled "Somatosensory tracts"), along with the spinal cord development image (labeled "Spinal Cord Development of the Alar and Basal Plates").

Creation (mostly): We need clean svg diagrams for hearing science topics. Right now we're predominantly using Gray's plates which is very clearly a problem!

I have a bunch of diagrams, graphs etc for which I need free alternatives. The graphs are probably easier to create since they're generally pretty simple. As well, I can get micrographs for which a diagram is needed so lessen the burden on any illustrator who wants to take this on.

Creation: illustrations of the process flow of geothermal heat pumps, showing closed horizontal, closed vertical, open, and direct exchange loops, as well as building heat exchange and hot water pre-heat.

Most articles on geothermal heat pumps start with the same 3 or 4 images, because it is so much easier to follow descriptions with reference to these diagrams. This article is likely to have growing importance among energy articles in the coming years. This idea seems to fit perfectly the first aim of this project: "Facilitate the creation of diagrams that would otherwise be unlikely to receive attention due to their topic or complexity"

Biogeochemical cycles are absolutely critical in understanding how the world functions. The carbon and nitrogen cycle are particularly significant today and the diagrams currently illustrating them are inadequate (the carbon one is ok but the nitrogen one and the others are shockingly bad!). This would be an excellent source to use for the nitrogen cycle. I have thought about trying myself but have neither the time nor the skills to do so unfortunately. If someone takes up this request I would be more than happy to help find sources to use in the diagrams. Please drop me a note on w:User talk:Smartse if you need me as I probably won't be checking this often.